Oh dude, I love this. I've been working on an interactive music thingy (https://trebel.la, it's sort of gamified but more designed to structure practice sessions for serious classical musicians) and struggling with the ABC vs. MusicXML choice.

Like most people in the space I'm using ABC for LLM generation (e.g. generating sightreading exercises and etudes) but MusicXML for processing and rendering the output. Would be nice to have something somewhere in between the over-simplified ABC and overly verbose MusicXML.

> Would be nice to have something somewhere in between the over-simplified ABC and overly verbose MusicXML.

Hard agree.

Early on I actually tried to write my drum charts directly in ABC Notation but it wasn’t a great fit. Then I made a simple parser for my language that outputs ABC because I thought it would be simpler but I found it to be very limiting, so now I use Vexflow’s low level API for rendering. I found it to be more customizable than ABC with a nice JS / TS API. It’s good for my use case (rendering) but ofc it doesn’t work as a save format.

Good luck with Trebella :)